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kolibrios/programs/network/httpc/trunk/httpc.asm
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;
; HTTPC.ASM
;
; Compile with FASM for Menuet ( v1.40 for DOS )
;
; This program implements a very simple web browser
;
; Version 0.4 2nd December 2003 Mike Hibbett
; Enabled lowercase/uppcase characters in URL
; Version 0.3 30th November 2003 Mike Hibbett
; Fixed bug with tcp socket opne - uses unique port
; Version 0.2 27th November 2003 Mike Hibbett
; Added user entry of url, and implements url -> IP address
; resolution through DNS
;
; Version 0.1 Ville Mikael Turjanmaa
; Original version
; Enabling debugging puts stuff to the debug board
DEBUGGING_ENABLED equ 1
DEBUGGING_DISABLED equ 0
DEBUGGING_STATE equ DEBUGGING_DISABLED
use32
org 0x0
db 'MENUET00' ; 8 byte id
dd 38 ; required os
dd START ; program start
dd I_END ; program image size
dd 0x100000 ; required amount of memory
dd 0x00000000 ; reserved=no extended header
include 'lang.inc'
include 'macros.inc'
;include "DEBUG.INC"
URLMAXLEN equ 50 ; maximum length of url string
; Memory usage
; webpage source file at 0x10000
; decoded text page at 0x20000
; text attribute 0x30000 (1 = normal, 2 = bold, 128+ = link)
START: ; start of execution
;dps <"Program started",13,10>
mov eax,40 ; Report events
mov ebx,10000111b ; Stack 8 + defaults
int 0x40
call draw_window
still:
mov eax,23 ; wait here for event
mov ebx,1
int 0x40
cmp eax,1 ; redraw request ?
je red
cmp eax,2 ; key in buffer ?
je key
cmp eax,3 ; button in buffer ?
je button
; Get the web page data from the remote server
call read_incoming_data
mov eax,[status]
mov [prev_status],eax
mov eax,53
mov ebx,6
mov ecx,[socket]
int 0x40
mov [status],eax
cmp [prev_status],4
jge no_send
cmp [status],4
jne no_send
mov [onoff],1
call send_request
no_send:
call print_status
cmp [prev_status],4
jne no_close
cmp [status],4 ; connection closed by server
jbe no_close ; respond to connection close command
; draw page
call read_incoming_data
mov eax,53
mov ebx,8
mov ecx,[socket]
int 0x40
call draw_page
mov [onoff],0
no_close:
jmp still
red: ; redraw
call draw_window
jmp still
key: ; key
mov eax,2 ; just read it and ignore
int 0x40
shr eax,8
cmp eax,184
jne no_down
cmp [display_from],25
jb no_down
sub [display_from],25
call display_page
no_down:
cmp eax,183
jne no_up
add [display_from],25
call display_page
no_up:
jmp still
button: ; button
;dps <"Button pressed",13,10>
mov eax,17 ; get id
int 0x40
cmp ah,1 ; button id=1 ?
jne noclose
;dps "Closing socket before exit... "
mov eax, 53
mov ebx, 8
mov ecx, [socket]
int 0x40
;dpd eax
;dps <13,10>
exit:
or eax,-1 ; close this program
int 0x40
noclose:
cmp ah,31
jne noup
sub [display_from],20
call display_page
jmp still
noup:
cmp ah,32
jne nodown
add [display_from],20
call display_page
jmp still
nodown:
cmp ah, 10 ; Enter url
jne nourl
mov [addr],dword document_user
mov [ya],dword 38
mov [len],dword URLMAXLEN
mov ecx,[len]
mov edi,[addr]
mov al,' '
rep stosb
call print_text
mov edi,[addr]
f11:
mov eax,10
int 0x40
cmp eax,2 ; key?
jz fbu
jmp still
fbu:
mov eax,2
int 0x40 ; get key
shr eax,8
cmp eax,8
jnz nobs
cmp edi,[addr]
jz f11
sub edi,1
mov [edi],byte ' '
call print_text
jmp f11
nobs:
cmp eax, dword 10
je retkey
cmp eax, dword 13
je retkey
cmp eax,dword 31
jbe f11
; Removed in v0.4
; cmp eax,dword 95
; jb keyok
; sub eax,32
keyok:
mov [edi],al
call print_text
add edi,1
mov esi,[addr]
add esi,URLMAXLEN
cmp esi,edi
jnz f11
jmp still
retkey:
mov ah, 22 ; start load
nourl:
call socket_commands ; opens or closes the connection
jmp still
;****************************************************************************
; Function
; send_request
;
; Description
; Transmits the GET request to the server.
; This is done as GET then URL then HTTP/1.0',13,10,13,10 in 3 packets
;
;****************************************************************************
send_request:
pusha
mov eax,53 ; 'GET '
mov ebx,7
mov ecx,[socket]
mov edx,4
mov esi,string0
int 0x40
mov edx,0
next_edx:
; Determine the length of the url to send in the GET request
inc edx
cmp [edx+document],byte ' '
jne next_edx
mov eax,53 ; document_user
mov ebx,7
mov ecx,[socket]
mov esi,document
int 0x40
mov eax,53 ; ' HTTP/1.0 .. '
mov ebx,7
mov ecx,[socket]
mov edx,stringh_end-stringh
mov esi,stringh
int 0x40
popa
ret
;****************************************************************************
; Function
; print_status
;
; Description
; displays the socket/data received status information
;
;****************************************************************************
print_status:
pusha
mov eax,26
mov ebx,9
int 0x40
cmp eax,[nextupdate]
jb status_return
add eax,25
mov [nextupdate],eax
mov eax,13
mov ebx,5*65536+100
mov ecx,[winys]
shl ecx,16
add ecx,-18*65536+10
mov edx,0xffffff
int 0x40
mov eax,47
mov ebx,3*65536
mov ecx,[status]
mov edx,12*65536-18
add edx,[winys]
mov esi,0x000000
int 0x40
mov eax,47
mov ebx,6*65536
mov ecx,[pos]
mov edx,40*65536-18
add edx,[winys]
mov esi,0x000000
int 0x40
status_return:
popa
ret
;****************************************************************************
; Function
; read_incoming_data
;
; Description
; receive the web page from the server, storing it without processing
;
;****************************************************************************
read_incoming_data:
cmp [onoff],1
je rid
ret
rid:
mov ecx,-1
newbyteread:
mov eax, 53
mov ebx, 2
mov ecx, [socket]
int 0x40
cmp eax,0
je no_more_data
read_more:
mov eax, 53
mov ebx, 3
mov ecx, [socket]
int 0x40
yesm:
inc [pos]
mov ecx,[pos]
mov [0x10000+ecx],bl
call print_status
cmp eax,0
jne read_more
mov eax,5
mov ebx,50
int 0x40
jmp newbyteread
no_more_data:
ret
;****************************************************************************
; Function
; draw_page
;
; Description
; parses the web page data, storing displayable data at 0x20000
; and attributes at 0x30000. It then calls display_page to render
; the data
;
;****************************************************************************
draw_page:
pusha
mov esi,0
mov [command_on_off],0
newlettercheck:
movzx eax,byte [esi+0x10000]
cmp al,'<'
jne no_c_on
mov [command_on_off],1
no_c_on:
cmp al,'>'
jne no_c_off
mov [command_on_off],0
no_c_off:
cmp [command_on_off],0
je no_lower_case
cmp eax,96
jg no_lower_case
cmp eax,65
jb no_lower_case
add eax,32
no_lower_case:
mov [esi+0x10000],al
inc esi
cmp esi,[pos]
jbe newlettercheck
mov edi,0x30000
mov ecx,0x10000
mov al,0
cld
rep stosb
mov [text_type],1
mov [command_on_off],0
mov esi,0
mov ecx,[pos]
; search for double lf
find_dlf:
cmp [0x10000+esi-4],dword 0x0d0a0d0a
je found_dlf
cmp [0x10000+esi-4],dword 0x0a0d0a0d
je found_dlf
cmp [0x10000+esi-2],word 0x0d0d
je found_dlf
cmp [0x10000+esi-2],word 0x0a0a
je found_dlf
cmp esi,5500
je found_dlf
inc esi
jmp find_dlf
found_dlf:
newbyte:
mov al,[esi+0x10000]
cmp al,'<'
jne no_command_on
mov [command_on_off],1
no_command_on:
cmp al,'>'
jne no_command_off
mov [command_on_off],0
jmp byte_done
no_command_off:
mov eax,[esi+0x10000] ; <!--
cmp eax,'<!--'
jne no_com2_start
mov [com2],1
no_com2_start:
mov ax,[esi+0x10000] ; -->
cmp ax,'->'
jne no_com2_end
mov [com2],0
inc esi
jmp byte_done
no_com2_end:
mov eax,[esi+0x10000] ; <script
cmp eax,'<scr'
jne no_script_start
mov [script],1
no_script_start:
mov eax,[esi+0x10000] ; /script>
cmp eax,'</sc'
jne no_script_end
mov [script],0
inc esi
jmp byte_done
no_script_end:
cmp [command_on_off],0
jne no_print
cmp [com2],0
jne no_print
cmp [script],0
jne no_print
mov al,[esi+0x10000] ; &
cmp al,'&'
jne no_nbsp
newsps:
inc esi
mov al,[esi+0x10000] ;
cmp al,';'
jne newsps
jmp byte_done
no_nbsp:
cmp al,13
jne no_lb
jmp byte_done
no_lb:
cmp al,10
jne no_lf
jmp byte_done
no_lf:
mov ebx,[pagey]
imul ebx,[pagexs]
add ebx,[pagex]
add ebx,0x20000
and eax,0xff
cmp eax,31
jbe byte_done
cmp [lastletter],al
jne letter_ok
cmp al,' '
je byte_done
letter_ok:
mov [ebx],al
mov dl,[text_type]
mov [ebx+0x10000],dl
mov [pageyinc],0
mov [lastletter],al
inc [pagex]
mov ebx,[pagex]
cmp ebx,[pagexs]
jb byte_done
mov [pagex],0
inc [pagey]
jmp byte_done
no_print:
; HTML -COMMAND
mov ax,[esi+0x10000] ; b> bold
cmp ax,'b>'
jne no_bold_start
mov [text_type],2
no_bold_start:
mov eax,[esi+0x10000] ; /b bold end
cmp eax,'</b>'
jne no_bold_end
mov [text_type],1
add esi,2
no_bold_end:
mov ax,[esi+0x10000] ; <a
cmp ax,'a '
jne no_link_start
mov [text_type],128
add esi,2
no_link_start:
mov ax,[esi+0x10000] ; /a
cmp ax,'/a'
jne no_link_end2
mov [text_type],1
add esi,0
no_link_end2:
mov ax,[esi+0x10000]
cmp ax,'br'
jne no_br
call linefeed
inc esi
no_br:
mov ax,[esi+0x10000]
cmp ax,'td'
jne no_td
call linefeed
inc esi
no_td:
mov eax,[esi+0x10000]
cmp eax,'tabl'
jne no_table
call linefeed
add esi,3
no_table:
byte_done:
inc esi
cmp esi,[pos]
jbe newbyte
mov [display_from],0
call display_page
popa
ret
;****************************************************************************
; Function
; linefeed
;
; Description
;
;
;****************************************************************************
linefeed:
cmp [pageyinc],2
jge nolf
mov [pagex],0
inc [pagey]
inc [pageyinc]
nolf:
ret
;****************************************************************************
; Function
; display_page
;
; Description
; Renders the text decoded by draw_page
;
;****************************************************************************
display_page:
pusha
mov eax,0
mov ebx,0
newpxy:
push eax
push ebx
mov eax,13 ; background for letter
mov ebx,[esp+4]
imul ebx,6
add ebx,[dpx]
shl ebx,16
add ebx,6
mov ecx,[esp+0]
imul ecx,10
add ecx,[dpy]
shl ecx,16
add ecx,10
mov edx,0xffffff
int 0x40
mov eax,4
mov ebx,[esp+4]
imul ebx,6
add ebx,[dpx]
shl ebx,16
mov bx,[esp+0]
imul bx,10
add bx,word [dpy]
mov esi,[esp]
imul esi,[pagexs]
add esi,[esp+4]
mov edx,[display_from]
imul edx,[pagexs]
add edx,0x20000
add edx,esi
movzx ecx,byte [edx+0x10000]
cmp ecx,1
jne noecx1
mov ecx,0x000000
noecx1:
movzx ecx,byte [edx+0x10000]
cmp ecx,2
jne noecx2
mov ecx,0xff0000
noecx2:
cmp ecx,128
jne noecx128
mov ecx,0x0000ff
noecx128:
mov esi,1
int 0x40
pop ebx
pop eax
inc eax
cmp eax,[pagexs]
jb newpxy
mov eax,0
inc ebx
cmp ebx,30
jb newpxy
popa
ret
;****************************************************************************
; Function
; socket_commands
;
; Description
; opens or closes the socket
;
;****************************************************************************
socket_commands:
cmp ah,22 ; open socket
jnz tst3
; Clear all page memory
mov edi,0x10000
mov ecx,0x30000
mov al,0
cld
rep stosb
; Parse the entered url
call parse_url
; Get a free port number
mov ecx, 1000 ; local port starting at 1000
getlp1:
inc ecx
push ecx
mov eax, 53
mov ebx, 9
int 0x40
pop ecx
cmp eax, 0 ; is this local port in use?
jz getlp1 ; yes - so try next
mov eax,53
mov ebx,5
mov edx,80
mov esi,dword [server_ip]
mov edi,1
int 0x40
mov [socket], eax
mov [pos],0
mov [pagex],0
mov [pagey],0
mov [pagexs],80
mov [command_on_off],0
ret
tst3:
cmp ah,24 ; close socket
jnz no_24
mov eax,53
mov ebx,8
mov ecx,[socket]
int 0x40
call draw_page
ret
no_24:
ret
;****************************************************************************
; Function
; parse_url
;
; Description
; parses the full url typed in by the user into a web address ( that
; can be turned into an IP address by DNS ) and the page to display
; DNS will be used to translate the web address into an IP address, if
; needed.
; url is at document_user and will be space terminated.
; web address goes to webAddr and is space terminated.
; ip address goes to server_ip
; page goes to document and is space terminated.
;
; Supported formats:
; <protocol://>address<page>
; <protocol> is optional, removed and ignored - only http supported
; <address> is required. It can be an ip address or web address
; <page> is optional and must start with a leading / character
;
;****************************************************************************
parse_url:
; First, reset destination variables
cld
mov al, ' '
mov edi, document
mov ecx,URLMAXLEN
rep stosb
mov edi, webAddr
mov ecx,URLMAXLEN
rep stosb
mov al, '/'
mov [document], al
mov esi, document_user
; remove any leading protocol text
mov ecx, URLMAXLEN
mov ax, '//'
pu_000:
cmp [esi], byte ' ' ; end of text?
je pu_002 ; yep, so not found
cmp word [esi], ax
je pu_001 ; Found it, so esi+2 is start
inc esi
loop pu_000
pu_002:
; not found, so reset esi to start
mov esi, document_user -2
pu_001:
add esi, 2
mov ebx, esi ; save address of start of web address
mov edi, document_user + URLMAXLEN ; end of string
; look for page delimiter - it's a '/' character
pu_003:
cmp [esi], byte ' ' ; end of text?
je pu_004 ; yep, so none found
cmp esi, edi ; end of string?
je pu_004 ; yep, so none found
cmp [esi], byte '/' ; delimiter?
je pu_005 ; yep - process it
inc esi
jmp pu_003
pu_005:
; copy page to document address
; esi = delimiter
push esi
inc esi
mov ecx, edi ; end of document_user
mov edi, document
cld
pu_006:
movsb
cmp esi, ecx
je pu_007 ; end of string?
cmp [esi], byte ' ' ; end of text
je pu_007
jmp pu_006
pu_007:
pop esi ; point esi to '/' delimiter
pu_004:
; copy web address to webAddr
; start in ebx, end in esi-1
mov ecx, esi
mov esi, ebx
mov edi, webAddr
cld
pu_008:
movsb
cmp esi, ecx
je pu_009
jmp pu_008
pu_009:
; For debugging, display resulting strings
if DEBUGGING_STATE = DEBUGGING_ENABLED
mov esi, document_user
call debug_print_string
mov esi, webAddr
call debug_print_string
mov esi, document
call debug_print_string
end if
; Look up the ip address, or was it specified?
mov al, [webAddr]
cmp al, '0'
jb pu_010 ; Resolve address
cmp al, '9'
ja pu_010 ; Resolve address
if DEBUGGING_STATE = DEBUGGING_ENABLED
mov esi, str2 ; print gotip
call debug_print_string
end if
; Convert address
mov esi,webAddr-1
mov edi,server_ip
xor eax,eax
ip1:
inc esi
cmp [esi],byte '0'
jb ip2
cmp [esi],byte '9'
jg ip2
imul eax,10
movzx ebx,byte [esi]
sub ebx,48
add eax,ebx
jmp ip1
ip2:
mov [edi],al
xor eax,eax
inc edi
cmp edi,server_ip+3
jbe ip1
jmp pu_011
pu_010:
if DEBUGGING_STATE = DEBUGGING_ENABLED
mov esi, str1 ; print resolving
call debug_print_string
end if
; Resolve Address
call translateData ; Convert domain & DNS IP address
call resolveDomain ; get ip address
if DEBUGGING_STATE = DEBUGGING_ENABLED
mov esi, str3
call debug_print_string
end if
pu_011:
; Done
ret
;***************************************************************************
; Function
; translateData
;
; Description
; Coverts the domain name and DNS IP address typed in by the user into
; a format suitable for the IP layer.
;
; The ename, in query, is converted and stored in dnsMsg
;
;***************************************************************************
translateData:
; first, get the IP address of the DNS server
; Then, build up the request string.
; Build the request string
mov eax, 0x00010100
mov [dnsMsg], eax
mov eax, 0x00000100
mov [dnsMsg+4], eax
mov eax, 0x00000000
mov [dnsMsg+8], eax
; domain name goes in at dnsMsg+12
mov esi, dnsMsg + 12 ; location of label length
mov edi, dnsMsg + 13 ; label start
mov edx, webAddr
mov ecx, 12 ; total string length so far
td002:
mov [esi], byte 0
inc ecx
td0021:
mov al, [edx]
cmp al, ' '
je td001 ; we have finished the string translation
cmp al, '.' ; we have finished the label
je td004
inc byte [esi]
inc ecx
mov [edi], al
inc edi
inc edx
jmp td0021
td004:
mov esi, edi
inc edi
inc edx
jmp td002
; write label len + label text
td001:
mov [edi], byte 0
inc ecx
inc edi
mov [edi], dword 0x01000100
add ecx, 4
mov [dnsMsgLen], ecx
ret
;***************************************************************************
; Function
; resolveDomain
;
; Description
; Sends a question to the dns server
; works out the IP address from the response from the DNS server
;
;***************************************************************************
resolveDomain:
; Get a free port number
mov ecx, 1000 ; local port starting at 1000
getlp:
inc ecx
push ecx
mov eax, 53
mov ebx, 9
int 0x40
pop ecx
cmp eax, 0 ; is this local port in use?
jz getlp ; yes - so try next
; First, open socket
mov eax, 53
mov ebx, 0
mov edx, 53 ; remote port - dns
mov esi, dword [dns_ip]
int 0x40
mov [socketNum], eax
; write to socket ( request DNS lookup )
mov eax, 53
mov ebx, 4
mov ecx, [socketNum]
mov edx, [dnsMsgLen]
mov esi, dnsMsg
int 0x40
; Setup the DNS response buffer
mov eax, dnsMsg
mov [dnsMsgLen], eax
; now, we wait for
; UI redraw
; UI close
; or data from remote
ctr001:
mov eax,10 ; wait here for event
int 0x40
cmp eax,1 ; redraw request ?
je ctr003
cmp eax,2 ; key in buffer ?
je ctr004
cmp eax,3 ; button in buffer ?
je ctr005
; Any data in the UDP receive buffer?
mov eax, 53
mov ebx, 2
mov ecx, [socketNum]
int 0x40
cmp eax, 0
je ctr001
; we have data - this will be the response
ctr002:
mov eax, 53
mov ebx, 3
mov ecx, [socketNum]
int 0x40 ; read byte - block (high byte)
; Store the data in the response buffer
mov eax, [dnsMsgLen]
mov [eax], bl
inc dword [dnsMsgLen]
mov eax, 53
mov ebx, 2
mov ecx, [socketNum]
int 0x40 ; any more data?
cmp eax, 0
jne ctr002 ; yes, so get it
; close socket
mov eax, 53
mov ebx, 1
mov ecx, [socketNum]
int 0x40
mov [socketNum], dword 0xFFFF
; Now parse the message to get the host IP
; Man, this is complicated. It's described in
; RFC 1035
if DEBUGGING_STATE = DEBUGGING_ENABLED
mov esi, str4
call debug_print_string
end if
; 1) Validate that we have an answer with > 0 responses
; 2) Find the answer record with TYPE 0001 ( host IP )
; 3) Finally, copy the IP address to the display
; Note: The response is in dnsMsg
; The end of the buffer is pointed to by [dnsMsgLen]
; Clear the IP address text
mov [server_ip], dword 0
mov esi, dnsMsg
; Is this a response to my question?
mov al, [esi+2]
and al, 0x80
cmp al, 0x80
jne ctr002a
; Were there any errors?
mov al, [esi+3]
and al, 0x0F
cmp al, 0x00
jne ctr002a
; Is there ( at least 1 ) answer?
mov ax, [esi+6]
cmp ax, 0x00
je ctr002a
; Header validated. Scan through and get my answer
if DEBUGGING_STATE = DEBUGGING_ENABLED
pusha
mov esi, str4
call debug_print_string
popa
end if
add esi, 12 ; Skip to the question field
; Skip through the question field
call skipName
add esi, 4 ; skip past the questions qtype, qclass
ctr002z:
; Now at the answer. There may be several answers,
; find the right one ( TYPE = 0x0001 )
call skipName
mov ax, [esi]
cmp ax, 0x0100 ; Is this the IP address answer?
jne ctr002c
; Yes! Point esi to the first byte of the IP address
add esi, 10
mov eax, [esi]
mov [server_ip], eax
ret
ctr002c: ; Skip through the answer, move to the next
add esi, 8
movzx eax, byte [esi+1]
mov ah, [esi]
add esi, eax
add esi, 2
; Have we reached the end of the msg?
; This is an error condition, should not happen
cmp esi, [dnsMsgLen]
jl ctr002z ; Check next answer
jmp ctr002a ; abort
ctr002a:
jmp ctr001
ctr003: ; redraw
call draw_window
jmp ctr001
ctr004: ; key
mov eax,2 ; just read it and ignore
int 0x40
jmp ctr001
ctr005: ; button
mov eax,17 ; get id
int 0x40
mov dl, ah
; close socket
mov eax, 53
mov ebx, 1
mov ecx, [socketNum]
int 0x40
cmp dl, 1
je exit
mov [socketNum], dword 0xFFFF
mov [server_ip], dword 0
ret
;***************************************************************************
; Function
; skipName
;
; Description
; Increment esi to the first byte past the name field
; Names may use compressed labels. Normally do.
; RFC 1035 page 30 gives details
;
;***************************************************************************
skipName:
mov al, [esi]
cmp al, 0
je sn_exit
and al, 0xc0
cmp al, 0xc0
je sn001
movzx eax, byte [esi]
inc eax
add esi, eax
jmp skipName
sn001:
add esi, 2 ; A pointer is always at the end
ret
sn_exit:
inc esi
ret
if DEBUGGING_STATE = DEBUGGING_ENABLED
;****************************************************************************
; Function
; debug_print_string
;
; Description
; prints a string to the debug board, in quotes
;
; esi holds ptr to msg to display, which is space or 0 terminated
;
; Nothing preserved; I'm assuming a pusha/popa is done before calling
;
;****************************************************************************
debug_print_string:
push esi
mov cl, '"'
mov eax,63
mov ebx, 1
int 0x40
pop esi
dps_000:
mov cl, [esi]
cmp cl, 0
je dps_exit
cmp cl, ' '
je dps_exit
jmp dps_001
dps_exit:
mov cl, '"'
mov eax,63
mov ebx, 1
int 0x40
mov cl, 13
mov eax,63
mov ebx, 1
int 0x40
mov cl, 10
mov eax,63
mov ebx, 1
int 0x40
ret
dps_001:
mov eax,63
mov ebx, 1
push esi
int 0x40
pop esi
inc esi
jmp dps_000
end if
;****************************************************************************
; Function
; print_text
;
; Description
; display the url (full path) text
;
;****************************************************************************
print_text:
; Draw a bar to blank out previous text
mov eax,13
mov ebx,30*65536+URLMAXLEN*6 ; 50 should really be [len], and 103 [xa]
mov ecx,[ya]
shl ecx,16
mov cx,9
mov edx,0xFFFFFF
int 0x40
; write text
mov eax,4
mov ebx,30*65536
add ebx,[ya]
mov ecx,0x000000
mov edx,[addr]
mov esi,URLMAXLEN
int 0x40
ret
; *********************************************
; ******* WINDOW DEFINITIONS AND DRAW ********
; *********************************************
draw_window:
mov eax,12 ; function 12:tell os about windowdraw
mov ebx,1 ; 1, start of draw
int 0x40
; DRAW WINDOW
mov eax,0 ; function 0 : define and draw window
mov ebx,50*65536+550 ; [x start] *65536 + [x size]
mov ecx,50*65536+400 ; [y start] *65536 + [y size]
mov edx,0x03ffffff ; color of work area RRGGBB,8->color gl
mov esi,0x805080d0 ; color of grab bar RRGGBB,8->color gl
mov edi,0x005080d0 ; color of frames RRGGBB
int 0x40
; WINDOW LABEL
mov eax,4 ; function 4 : write text to window
mov ebx,8*65536+8 ; [x start] *65536 + [y start]
mov ecx,0x00ddeeff ; color of text RRGGBB
mov edx,labelt ; pointer to text beginning
mov esi,labellen-labelt ; text length
int 0x40
mov esi, URLMAXLEN ; URL
mov eax,4 ; function 4 : write text to window
mov ebx,30*65536+38 ; [x start] *65536 + [y start]
mov ecx,0x000000 ; color of text RRGGBB
mov edx,document_user ; pointer to text beginning
int 0x40
mov eax,38
mov ebx,5*65536+545
mov ecx,60*65536+60
mov edx,0x000000
int 0x40
mov eax,38
mov ebx,5*65536+545
mov ecx,[winys]
shl ecx,16
add ecx,[winys]
sub ecx,26*65536+26
mov edx,0x000000
int 0x40
; RELOAD
mov eax,8 ; function 8 : define and draw button
mov ebx,388*65536+50 ; [x start] *65536 + [x size]
mov ecx,34*65536+14 ; [y start] *65536 + [y size]
mov edx,22 ; button id
mov esi,0x5588dd ; button color RRGGBB
int 0x40
; URL
mov eax,8 ; function 8 : define and draw button
mov ebx,10*65536+12 ; [x start] *65536 + [x size]
mov ecx,34*65536+12 ; [y start] *65536 + [y size]
mov edx,10 ; button id
mov esi,0x5588dd ; button color RRGGBB
int 0x40
; STOP
mov eax,8 ; function 8 : define and draw button
mov ebx,443*65536+50 ; [x start] *65536 + [x size]
mov ecx,34*65536+14 ; [y start] *65536 + [y size]
mov edx,24 ; button id
mov esi,0x5588dd ; button color RRGGBB
int 0x40
; BUTTON TEXT
mov eax,4 ; function 4 : write text to window
mov ebx,390*65536+38 ; [x start] *65536 + [y start]
mov ecx,0xffffff ; color of text RRGGBB
mov edx,button_text ; pointer to text beginning
mov esi,20 ; text length
int 0x40
call display_page
mov eax,12 ; function 12:tell os about windowdraw
mov ebx,2 ; 2, end of draw
int 0x40
ret
if DEBUGGING_STATE = DEBUGGING_ENABLED
str1: db "Resolving...",0
str3: db "Resolved",0
str2: db "GotIP",0
str4: db "GotResponse",0
end if
button_text db ' RELOAD STOP '
dpx dd 25 ; x - start of html page in pixels in window
dpy dd 65 ; for y
lastletter db 0
pageyinc dd 0
display_from dd 20
pos dd 0x0
pagex dd 0x0
pagey dd 0x0
pagexs dd 80
command_on_off dd 0x0
text_type db 1
com2 dd 0x0
script dd 0x0
socket dd 0x0
addr dd 0x0
ya dd 0x0
len dd 0x00
labelt: db 'HTTPC - PgUp/PgDown'
labellen:
server_ip: db 207,44,212,20
dns_ip: db 194,145,128,1
webAddr: times 128 db ' '
document_user: db 'Click on the button to the left to enter a URL',0
times 100 db 0x0
document: db '/'
times 100 db ' '
string0: db 'GET '
stringh: db ' HTTP/1.0',13,10,13,10
stringh_end:
status dd 0x0
prev_status dd 0x0
onoff dd 0x0
nextupdate: dd 0
winys: dd 400
dnsMsgLen: dd 0
socketNum: dd 0xFFFF
dnsMsg:
I_END:
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